Machine



(No Model.)

A. B. DICK. TYPE WRITING MACHINE.

No. 549,632. Patented Nov. 12,1895.

:r;- z F I F D J o I: o :B E @Q K 6 Q/Wmtoz om aw MZZZ/ I UNITED STATES PATENT OFFICE.

ALBERT ll. DICK, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE A. B. DICK (OMPAYlX OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 549,632, dated November 12, 1895. A plicationfiled August30,1893. summarises. on model.)

To all whom it may concern Be it known that I, {\LBERT B. DICK, a citizen of the United States, residingat Chicago,

in the county of- Cook and State of Illinois,

have invented a certain new and useful linprovement in 'lype-lvri ter 'heels, of which the following is a specification.

The object of my invention is a type-writer wheelsimple and economical in construction and so arranged as to permit the renewal of 1 the printing characters easily, readily, and cheaply.

My invention consists in the devices and combination of devices hereinafter described and clai med.

In the accompanying drawings, forming part of this s 'iecification, Figure 1 a sectional elevation ofa type wheel embodying my invention. Fig. 2' is a bot-tom plan of a portion of the lower plate of the wheel. Fig. 3 is a top plan of a port-ion of the upper plate of the wheel. Fig. 4 .isabottoin plan of afew of the teeth of the lower plate, showing the bottom bevel thereof. Fig. 5 is a perspective view of one of the removable type.

It will be understood that the operative portions of the machine are not shown, 'it'being sufficient for the'purposc of this specification to show simply the type-wheel and the portions which directly affect it.

Arepresents the shaft supporting and carrying the t ypewheel. This shaft-may be operated in any suitable manner.

" Breprcsents the lower plate of the typewheel, which, as shown, is formed with a series of teeth sufficient to provide a space a for each type. These teeth are beveled vertically, as shownin Fig. ,2, and, as shown in Fig. 4, are beveled toward the bottom also.

0 represents the upper plate, which is provided with a number of slots corresponding to the slots a between the teeth,said slots bc ing lettered c. As shown,these slots arearranged radially from the center of the wheel,

and when the wheel is in operating position said slots will-be vertical or at right angles to the horizontal plane of the wheel. Each- .of these slots is designed to curry a printing character. The upper surfaeept the plate I; at itsouter cdgcis provided with a groove 0' and the under surface of the plate C is provided with asimilar groove. A band of metal D is slipped into these .grooves, and thus the two plates B and Care secured together, said band being united by any suitable means. It will be apparent that this construction is simple and efficient.

The printing characters are carried by thin perspective view, Fig. 5, is so enlarged as'tov form a shoulder at each side of the plate, and uponthese shoulders the said plate is supported and prevented from dropping through the slots in the plates B and C, it being un- 'derstood that the said plate E is dropped loosely therein and is freelyremovable there from. It is obvious that these printing characters may be cast in one'piece'or an ordinary character may be secured to a thinspindle in any suitable manner,

G, Fig. 1, represents'the frame of the I na-- chine; H, a hammer operated by any suitable plate or mechanism; I, a movable anvil loosel'yfsup ported in a slot in a projection from the frame of the machine and prevented from dropping out of its slot by the pin i, and J is a rockshaft carrying'a projecting finge'r'li, designed to enter from beneath upward between the teeth on the plate B. p

The operation of the device is as follows:

It being understood that the printing characters are brought around by any suitable mechanism through the revolution of the type-wheel to about-the printing position by one movement, the printing movement then follows and the shaft of the-hammer H and the rock-shaft J are simultaneously moved. The finger K, entering between the teeth on the wheel B, will bring the printing characterinto alignment, this movement being exact and accurate owing to the entrance of the finger from beneath between the beveled edges of the teeth. The hammer lthcn strikes the movable anvil I, and that anvil is projected upward against the printing character F and the latte r,is forced upward toward the platen. lt'non releasing the printing mechanism the ICU simple in construction and operation is pro vided.

I claixn- 1. The combination. inat e-wheeh of' an upper and lower portion, eac provided with a series of slots, one for each character, and an'alignment finger, the slots in said lower portion being bevele'dat the sides to receive said finger from beneath, substantially as set forth. l

- 2. The combination of a typewheel, comprising the lower plate B, and the upper plate 3, connected togetherand revoluble in a horizontal plane, a plurality of type-bearing plates or spindles 'vertically mounted in said plates l3 and C, a printing character carried by the upper end of each of said type-bearing plates or spindles, a plurality of teeth extending entirely around the periphery of the lower plate B, an alignment finger adapted to engage between said teeth and lock the type-wheel and a hammer adapted to elevate one of said typewheel is locked, substantially-as described.

3. The combination in a rotatin gtype wheel provided with radial slots to receive printing characters supported therein by gravity,

bearing plates or spindles when the-type= of printing characters provided with an enlarged printing head and a spindle adapted to enter said slots, substantially as .set forth.

4. The combination in a type wheel of an upper and lower plate provided with. radial slots, means for securing said plates together,

and printing charactersloosely -carried in said I slots, substantially as set forth. v

This specification signed andwitnessed this 26th day of August, 1893.

' ,ALBER'I DICK, Witnesses:

EUGENE CoNRAN, GEO. B. Gnome; 

